Python boto 模块，UserAgent() 实例源码

def test_user_agent_not_url_encoded(self):
        headers = {'Some-Header': u'should be url encoded',
                   'User-Agent': UserAgent}
        request = HTTPRequest('PUT', 'https', 'amazon.com', 443, None,
                              None, {}, headers, 'Body')
        mock_connection = mock.Mock()

        # Create a method that preserves the headers at the time of
        # authorization.
        def mock_add_auth(req, **kwargs):
            mock_connection.headers_at_auth = req.headers.copy()

        mock_connection._auth_handler.add_auth = mock_add_auth

        request.authorize(mock_connection)
        # Ensure the headers at authorization are as expected i.e.
        # the user agent header was not url encoded but the other header was.
        self.assertEqual(mock_connection.headers_at_auth,
                         {'Some-Header': 'should%20be%20url%20encoded',
                          'User-Agent': UserAgent})

def authorize(self, connection, **kwargs):
        for key in self.headers:
            val = self.headers[key]
            if isinstance(val, unicode):
                self.headers[key] = urllib.quote_plus(val.encode('utf-8'))

        connection._auth_handler.add_auth(self, **kwargs)

        self.headers['User-Agent'] = UserAgent
        # I'm not sure if this is still needed, now that add_auth is
        # setting the content-length for POST requests.
        if 'Content-Length' not in self.headers:
            if 'Transfer-Encoding' not in self.headers or \
                    self.headers['Transfer-Encoding'] != 'chunked':
                self.headers['Content-Length'] = str(len(self.body))

def authorize(self, connection, **kwargs):
        for key in self.headers:
            val = self.headers[key]
            if isinstance(val, unicode):
                self.headers[key] = urllib.quote_plus(val.encode('utf-8'))

        connection._auth_handler.add_auth(self, **kwargs)

        self.headers['User-Agent'] = UserAgent
        # I'm not sure if this is still needed, now that add_auth is
        # setting the content-length for POST requests.
        if 'Content-Length' not in self.headers:
            if 'Transfer-Encoding' not in self.headers or \
                    self.headers['Transfer-Encoding'] != 'chunked':
                self.headers['Content-Length'] = str(len(self.body))

def authorize(self, connection, **kwargs):
        for key in self.headers:
            val = self.headers[key]
            if isinstance(val, unicode):
                self.headers[key] = urllib.quote_plus(val.encode('utf-8'))

        connection._auth_handler.add_auth(self, **kwargs)

        self.headers['User-Agent'] = UserAgent
        # I'm not sure if this is still needed, now that add_auth is
        # setting the content-length for POST requests.
        if 'Content-Length' not in self.headers:
            if 'Transfer-Encoding' not in self.headers or \
                    self.headers['Transfer-Encoding'] != 'chunked':
                self.headers['Content-Length'] = str(len(self.body))